ITEM NAME:R3 MEGA328P ATMEGA16U2 Development board for USB Cable SGHS ON Sale M2X9 HOT SALE body .shopclass { float: left; width: 100%;.1 x R3 Board. More stable RESET circuit. RESET key position has also changed, was moved close to the USB interface board corner, more convenient press. Easily use sensors, a variety of electronic components (such as: LED lights, buzzers, keys, photoresistors, etc.), to make a variety of interesting works.